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催化超临界水氧化对氨基苯酚动力学研究 被引量:1

Kinetics of Catalytic Oxidation of p-Aminophenol in Supercritical Water
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摘要 采用CuO/γ-Al2O3和MnO2/γ-Al2O3为催化剂、H2O2为氧化剂,在一连续流固定床反应器中分别进行了催化超临界水氧化对氨基苯酚实验,得到了COD去除宏观动力学方程。在26MPa、400-450℃和H2O2过量的情况下,反应对COD分别为0.92级(CuO)和0.95级(MnO2),对氧气分别为0.12级(CuO)和0.21级(MnO2)。反应的活化能分别为37.70kJ/mol(CuO)和51.47kJ/mol(MnO2),前置因子A分别为5.06×10^2(CuO)和5.80×10^3(MnO2)。 p-aminophenol was oxidized in supercritical water using CuO/γ-Al2O3 and MnOE/γ-Al2O3 as catalysts and H2O2 as an oxidant in a packed-bed flow reactor. The global kinetics for COD disappearance was described by a powerlaw. Under the conditions of 26 MPa, 400 -450 ℃ and H2O2 excess, the kinetic equations were 0.92 order (CuO) and 0.95 order (MnO2) for COD and 0.12 order (CuO) and 0.21 order (MnO2) for oxygen. The activation energies were 37.70 kJ/mol(CuO) and 51.47 kJ/mol(MnO2), and the Arrhenius pre-exponential factors were 5.06 × 10^2 (CuO) and 5.80 × 10^3(MnO2) .
出处 《化学世界》 CAS CSCD 北大核心 2006年第7期391-394,共4页 Chemical World
基金 陕西省教育厅基金资助项目(04JK307)
关键词 对氨基苯酚 超临界水氧化 动力学 催化剂 p-aminophenol supercritical water oxidation kinetics catalyst
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